FontFaceSet: loading event
Baseline
2025
Newly available
Since December 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
Note: This feature is available in Web Workers.
The loading event fires when the document begins loading fonts.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("loading", (event) => { })
onloading = (event) => { }
Example
In the following example, when the font Ephesis starts to load, "Font is loading…" is printed to the console.
js
document.fonts.onloading = () => {
console.log("Font is loading");
};
(async () => {
await document.fonts.load("16px Ephesis");
})();
Specifications
| Specification |
|---|
| CSS Font Loading Module Level 3 # dom-fontfaceset-onloading |